L 1 Circuit symbols L 11 National Grid

L 1 Circuit symbols L 11 National Grid L 2 Current & charge L 3 Potential difference L 4 Resistance & Ohm’s Law L 5 Power & energy L 6 Electrical power L 7 Current in series & parallel L 8 Potential difference in series & parallel L 9 Sensing circuits L 10 Three pin plug Pupils should have been taught to: • Specification Students know the definition of current & how to calculate currents in simple examples. Prior Learning Lesson Sequence Pupils will be taught: • The ideas taught in this lesson will expanded upon in the lesson on potential difference in series & parallel Future Learning

Sci. Doc Current in series & parallel Do Now Last Lesson Last Term Last Year Stretch & Challenge I do We do You do Test

Sci. Doc Learning Objectives Recall that current is the same everywhere in a series circuit. Recall that current splits in a parallel circuit. Keywords Current Amps Series Parallel Junction Calculate currents in series and parallel circuits. Do Now I do We do You do Test

In a series circuit the current flow through one continuous path. This means that the current must be the same at all parts in a series circuit. Sci. Doc Stretch Both of the lamps above have a resistance of 3 Ω. Calculate the potential difference supply of the battery. LO: I do We do You do Test

In a parallel circuit, there are different paths for the current to take. Sci. Doc Current splits in a parallel circuit. Stretch: Say we have a circuit as above, but one of the bulbs has more resistance than the other? What happens to the current? What if the resistance of one bulb is three times the other? LO: I do We do You do Test

Sci. Doc Practical Equipment you will need: -Battery x 2 -Bulb x 2 -Ammeter x 1 -Connecting wires x 5 LO: I do We do You do Test

Sci. Doc LO: I do We do You do Test

Sci. Doc LO: I do We do You do Test

Sci. Doc LO: I do We do You do Test

Sci. Doc Worksheet Complete the worksheet! LO: I do We do You do Test

Sci. Doc Basic answers LO: I do We do You do Test

Sci. Doc Medium answers LO: I do We do You do Test

Sci. Doc Hard answers 1. Both 6 A- current in the parallel branches add together when the branches join. 2. 1 A- the 3 A is split between the two branches, the current through X plus the current through Y must add up to 3 A 3. 26/4=6. 5 A 4. 0. 20+0. 10=0. 30 A LO: I do We do You do Test

Sci. Doc Struggle time! Exam question so exam conditions! You have 6 minutes. LO: I do We do You do Test

Sci. Doc LO: I do We do You do Test

Sci. Doc LO: I do We do You do Test